Definition: Given a 'poster' sentence and a corresponding 'response' (often, from Facebook or Reddit)classify the sentiment of the given response into four categories: 1) Positive, 2) Negative, 3) Neutral, and 4) Mixed if it contains both positive and negative.
Input: Poster: Shredding Keystone Resort ! : @chipproulx  Responser: Doesn't that damage your skis you should aim away from the obstacles

Negative